ThermaSource, a Santa Rosa, Calif. company that does drilling and other construction services for the growing geothermal power industry, has acquired Tecton Geologic of Windsor, Calif. Less than a month ago, ThermaSource announced a $41.5 million funding. The company's prospects appear to be rising, along with geothermal, which is gaining recognition as a good energy source. No acquisition price was disclosed for Tecton, which has 17 employees.